/* 
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Contributor(s):
 *   Lan Qiang <jameslan@gmail.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK *****
 */

#ifndef nsZIPOUTPUTSTREAM_h__
#define nsZIPOUTPUTSTREAM_h__

#include "nsIOutputStream.h"
#include "nsZipFileIO.h"

class nsZipEntryIndex;
class nsZipOutputStream : public nsIOutputStream
{
public:
	NS_DECL_ISUPPORTS
	NS_DECL_NSIOUTPUTSTREAM

	nsZipOutputStream() :
		mFd(nsnull), mOutSize(0), mCurPos(0), 
		mClosed(PR_FALSE), mIndex(nsnull),
		mZipIO(nsnull), mDeflate(nsnull) 
	{
	}

	nsresult Init(nsZipFileIO* aZip, nsZipEntryItem *item,
			nsZipEntryIndex *index, PRFileDesc *fd,
			nsZipFileIO *zipio, nsZipLevel compression);

private:
	PRFileDesc*      mFd;         // My own file handle, for reading
	PRUint32         mOutSize;    // Size in zip file 
	PRUint32         mCurPos;     // Current position in input 
	PRPackedBool     mClosed;     // Whether the stream is closed
	nsZipEntryItem*  mItem;       // index item
	nsZipEntryIndex* mIndex;
	nsZipFileIO*     mZipIO;
	PRUint32         mInCrc;     // CRC as calculated by me

	struct DeflateStruct {
		z_stream         mZs;         // zip data structure
		unsigned char    mWriteBuf[ZIP_BUFLEN]; // Readbuffer to deflate to
	};
	struct DeflateStruct *   mDeflate;

	~nsZipOutputStream() { Close(); }
	nsresult ContinueDeflate(const char* aBuf, PRUint32 aCount, PRUint32* aBytesWrit);
};

#endif
